PMID- 12679905 OWN - NLM STAT- MEDLINE DCOM- 20030729 LR - 20240324 IS - 1007-9327 (Print) IS - 2219-2840 (Electronic) IS - 1007-9327 (Linking) VI - 9 IP - 4 DP - 2003 Apr TI - Tributyrin inhibits human gastric cancer SGC-7901 cell growth by inducing apoptosis and DNA synthesis arrest. PG - 660-4 AB - AIM: To evaluate the effects of tributyrin, a pro-drug of natural butyrate and a neutral short-chain fatty acid triglyceride, on the growth inhibition of human gastric cancer SGC-7901 cell. METHODS: Human gastric cancer SGC-7901 cells were exposed to tributyrin at 0.5, 1, 2, 5, 10 and 50 mmol/L(-1) for 24-72 h. MTT assay was applied to detect the cell proliferation. [(3)H]-TdR uptake was measured to determine DNA synthesis. Apoptotic morphology was observed by electron microscopy and Hoechst-33258 staining. Flow cytometry and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay were performed to detect tributyrin-triggered apoptosis. The expressions of PARP, Bcl-2 and Bax were examined by Western blot assay. RESULTS: Tributyrin could initiate growth inhibition of SGC-7901 cell in a dose- and time-dependent manner. [(3)H]-TdR uptake by SGC-7901 cells was reduced to 33.6 % after 48 h treatment with 2 mmol/L(-1) tributyrin, compared with the control (P<0.05). Apoptotic morphology was detected by TUNEL assay. Flow cytometry revealed that tributyrin could induce apoptosis of SGC-7901 cells in dose-dependent manner. After 48 hours incubation with tributyrin at 2 mmol/L(-1), the level of Bcl-2 protein was lowered, and the level of Bax protein was increased in SGC-7901, accompanied by PARP cleavage. CONCLUSION: Tributyrin could inhibit the growth of gastric cancer cells effectively in vitro by inhibiting DNA synthesis and inducing apoptosis, which was associated with the down-regulated Bcl-2 expression and the up-regulated Bax expression. Therefore, tributyrin might be a promising chemopreventive and chemotherapeutic agent against human gastric carcinogenesis. FAU - Yan, Jun AU - Yan J AD - Lab of Molecular and Cellular Oncology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue Yang Road, Shanghai 200031, China. FAU - Xu, Yong-Hua AU - Xu YH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - World J Gastroenterol JT - World journal of gastroenterology JID - 100883448 RN - 0 (Antineoplastic Agents) RN - 0 (Prodrugs) RN - 0 (Triglycerides) RN - S05LZ624MF (tributyrin) SB - IM MH - Antineoplastic Agents/toxicity MH - Apoptosis/*drug effects MH - Cell Division/drug effects MH - DNA Replication/*drug effects MH - Flow Cytometry MH - Humans MH - In Situ Nick-End Labeling MH - Prodrugs/toxicity MH - Stomach Neoplasms/*pathology/ultrastructure MH - Triglycerides/*toxicity MH - Tumor Cells, Cultured PMC - PMC4611423 EDAT- 2003/04/08 05:00 MHDA- 2003/07/30 05:00 PMCR- 2003/04/15 CRDT- 2003/04/08 05:00 PHST- 2003/04/08 05:00 [pubmed] PHST- 2003/07/30 05:00 [medline] PHST- 2003/04/08 05:00 [entrez] PHST- 2003/04/15 00:00 [pmc-release] AID - 10.3748/wjg.v9.i4.660 [doi] PST - ppublish SO - World J Gastroenterol. 2003 Apr;9(4):660-4. doi: 10.3748/wjg.v9.i4.660.